Title:
LIGHT REFLECTION FILM, AND BACKLIGHT UNIT FOR LIQUID CRYSTAL DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/047649
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a light reflection film in which the reflectance of a blue light region is increased without adversely affecting the hue of reflection light realized by lamination of a low-refractive-index layer and a high-refractive-index layer. This light reflection film includes a light-absorption layer A in which the average transmittance of light having a wavelength of 360-400 nm is 15% or less and the average reflectance of light having a wavelength of 360-400 nm is 10% or less, a metal reflective layer B, a low-refractive-index layer C, and a high-refractive-index layer D in which the refractive index for light having a wavelength of 500 nm is higher than in the low-refractive-index layer C, the layers being disposed in the stated order. The average reflectance R2 of light having a wavelength of 430-470 nm when light is made incident to the high-refractive-index layer D at an angle of incidence of 5° is greater than the average reflectance R3 of light at a wavelength of 560-600 nm.
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| JP2015189193 | MULTILAYER FILM |
Inventors:
HONDA MIKA
Application Number:
PCT/JP2016/077128
Publication Date:
March 23, 2017
Filing Date:
September 14, 2016
Export Citation:
Assignee:
KONICA MINOLTA INC (JP)
International Classes:
B32B7/02; G02B5/08; B32B15/08; F21S2/00; F21V7/00; F21V7/22; G02B5/00; G02F1/13357
Domestic Patent References:
| WO2004074887A1 | 2004-09-02 | |||
| WO2013141304A1 | 2013-09-26 |
Foreign References:
| JP2006003502A | 2006-01-05 | |||
| JP2005331710A | 2005-12-02 | |||
| JP2007133003A | 2007-05-31 | |||
| JPH08508004A | 1996-08-27 | |||
| JPH06183787A | 1994-07-05 |
Attorney, Agent or Firm:
WASHIDA, Kimihito (JP)
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